package com.cfets.annualAssessment.util;

import com.cfets.annualAssessment.entity.AnnualInform;
import com.cfets.annualAssessment.entity.AnnualInformComplete;
import com.cfets.annualAssessment.entity.WorkExp;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;

/**
 * Created by ex-yanjun on 14-5-29.
 */
public class ExcelUtil {

    public static String exportExcel(String title, String[] rowName, String[] filedName, List<?> dataList, HttpServletResponse response) {
//        try{
            HSSFWorkbook workbook = new HSSFWorkbook();						// 创建工作簿对象
            HSSFSheet sheet = workbook.createSheet(title);		 			// 创建工作表

            // 产生表格标题行
            HSSFRow rowm = sheet.createRow(0);
            HSSFCell cellTiltle = rowm.createCell(0);

            //sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面  - 可扩展】
            HSSFCellStyle columnTopStyle = getColumnTopStyle(workbook);//获取列头样式对象
            HSSFCellStyle style = getStyle(workbook);					//单元格样式对象

            sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1)));
            cellTiltle.setCellStyle(columnTopStyle);
            cellTiltle.setCellValue(title);

            // 定义所需列数
            int columnNum = rowName.length;
            HSSFRow rowRowName = sheet.createRow(2);				// 在索引2的位置创建行(最顶端的行开始的第二行)

            // 将列头设置到sheet的单元格中
            for(int n=0;n<columnNum;n++){
                HSSFCell  cellRowName = rowRowName.createCell(n);				//创建列头对应个数的单元格
                cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING);				//设置列头单元格的数据类型
                HSSFRichTextString text = new HSSFRichTextString(rowName[n]);
                cellRowName.setCellValue(text);									//设置列头单元格的值
                cellRowName.setCellStyle(columnTopStyle);						//设置列头单元格样式
            }

            //将查询出的数据设置到sheet对应的单元格中

            for(int i=0;i<dataList.size();i++){
                HSSFRow row = sheet.createRow(i+3);//创建所需的行数
                Map<String,Object> map = MapUtil.convertObjToMap(dataList.get(i));
                int count = 0;
                for(int j=0; j<filedName.length; j++){
                    HSSFCell  cell = null;   //设置单元格的数据类型
                    if(j == 0){
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);
                        cell.setCellValue(i+1);
                    }else{
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);
                        if(!"".equals(map.get(filedName[j])) && map.get(filedName[j]) != null){
                            cell.setCellValue(map.get(filedName[j]).toString());						//设置单元格的值
                        }else {
                            cell.setCellValue("");
                        }
                    }
                    cell.setCellStyle(style);									//设置单元格样式
                }
            }
            //让列宽随着导出的列长自动适应
            for (int colNum = 0; colNum < columnNum; colNum++) {
                int columnWidth = sheet.getColumnWidth(colNum) / 256;
                for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
                    HSSFRow currentRow;
                    //当前行未被使用过
                    if (sheet.getRow(rowNum) == null) {
                        currentRow = sheet.createRow(rowNum);
                    } else {
                        currentRow = sheet.getRow(rowNum);
                    }
                    if (currentRow.getCell(colNum) != null) {
                        HSSFCell currentCell = currentRow.getCell(colNum);
                        if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
                            int length = 0;
                            try {
                                length = currentCell.getStringCellValue().getBytes("UTF-8").length;
                            } catch (UnsupportedEncodingException e) {
                                e.printStackTrace();
                            }
                            if (columnWidth < length) {
                                columnWidth = length;
                            }
                        }
                    }
                }
                if(colNum == 0){
                    sheet.setColumnWidth(colNum, (columnWidth-2) * 256);
                }else{
                    if((columnWidth+4) * 256 <= 150*256){
                        sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
                    }else{
                        sheet.setColumnWidth(colNum, 150*256);
                    }
                }
            }

            if(workbook !=null){
                try{
                    export(response,title,workbook);
                }catch (IOException e){
                    e.printStackTrace();
                }
            }

//        }catch(Exception e){
//            e.printStackTrace();
//        }
        return null;
    }

    private static void export(HttpServletResponse response, String title, HSSFWorkbook workbook) throws IOException {
        response.reset();
        String fileName = title + ".xls";
        String headStr = "attachment; filename=\"" + new String(fileName.getBytes("UTF-8"), "ISO8859-1") + "\"";
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", headStr);
        OutputStream out = response.getOutputStream();
        workbook.write(out);
        out.flush();
        out.close();
    }

    /*
	 * 列头单元格样式
	 */
    public static HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {
        // 设置字体
        HSSFFont font = workbook.createFont();
        //设置字体大小
        font.setFontHeightInPoints((short)11);
        //字体加粗
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        //设置字体名字
        font.setFontName("Courier New");
        //设置样式;
        HSSFCellStyle style = workbook.createCellStyle();
        //设置底边框;
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        //设置底边框颜色;
        style.setBottomBorderColor(HSSFColor.BLACK.index);
        //设置左边框;
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        //设置左边框颜色;
        style.setLeftBorderColor(HSSFColor.BLACK.index);
        //设置右边框;
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        //设置右边框颜色;
        style.setRightBorderColor(HSSFColor.BLACK.index);
        //设置顶边框;
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        //设置顶边框颜色;
        style.setTopBorderColor(HSSFColor.BLACK.index);
        //在样式用应用设置的字体;
        style.setFont(font);
        //设置自动换行;
        style.setWrapText(false);
        //设置水平对齐的样式为居中对齐;
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        //设置垂直对齐的样式为居中对齐;
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        return style;
    }

    /*
	 * 列数据信息单元格样式
	 */
    public static HSSFCellStyle getStyle(HSSFWorkbook workbook) {
        // 设置字体
        HSSFFont font = workbook.createFont();
        //设置字体大小
        //font.setFontHeightInPoints((short)10);
        //字体加粗
        //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        //设置字体名字
        font.setFontName("Courier New");
        //设置样式;
        HSSFCellStyle style = workbook.createCellStyle();
        //设置底边框;
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        //设置底边框颜色;
        style.setBottomBorderColor(HSSFColor.BLACK.index);
        //设置左边框;
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        //设置左边框颜色;
        style.setLeftBorderColor(HSSFColor.BLACK.index);
        //设置右边框;
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        //设置右边框颜色;
        style.setRightBorderColor(HSSFColor.BLACK.index);
        //设置顶边框;
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        //设置顶边框颜色;
        style.setTopBorderColor(HSSFColor.BLACK.index);
        //在样式用应用设置的字体;
        style.setFont(font);
        //设置自动换行;
        style.setWrapText(true);
        //设置水平对齐的样式为居中对齐;
        style.setAlignment(HSSFCellStyle.ALIGN_LEFT);
        //设置垂直对齐的样式为居中对齐;
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        return style;
    }

    public static String exportAnnualExcel(String title, String[] rowName, String[] filedName, String[] WorkExpName, List<AnnualInformComplete> dataList, HttpServletResponse response) {
//        try{
        HSSFWorkbook workbook = new HSSFWorkbook();						// 创建工作簿对象
        HSSFSheet sheet = workbook.createSheet(title);		 			// 创建工作表


        // 定义所需列数
        int columnNum = rowName.length;
        HSSFRow rowRowName = sheet.createRow(0);				// 在索引2的位置创建行(最顶端的行开始的第二行)

        // 将列头设置到sheet的单元格中
        for(int n=0;n<columnNum;n++){
            HSSFCell  cellRowName = rowRowName.createCell(n);				//创建列头对应个数的单元格
            cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING);				//设置列头单元格的数据类型
            HSSFRichTextString text = new HSSFRichTextString(rowName[n]);
            cellRowName.setCellValue(text);									//设置列头单元格的值
        }

        //将查询出的数据设置到sheet对应的单元格中

        for(int i=0;i<dataList.size();i++){
            HSSFRow row = sheet.createRow(i+1);//创建所需的行数
            Map<String,Object> map = MapUtil.convertObjToMap(dataList.get(i));
            List<WorkExp> workExpList = dataList.get(i).getWorkExpList();
            for(int j=0; j<filedName.length; j++){
                HSSFCell  cell = null;   //设置单元格的数据类型
                if(j == 0){
                    cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);
                    cell.setCellValue(i+1);
                }else{
                    cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);
                    if(!"".equals(map.get(filedName[j])) && map.get(filedName[j]) != null){
                        cell.setCellValue(map.get(filedName[j]).toString());						//设置单元格的值
                    }else {
                        cell.setCellValue("");
                    }
                }
            }
            for(int l=0;l<workExpList.size();l++){
                Map<String,Object> mapWorkExp = MapUtil.convertObjToMap(workExpList.get(l));
                for(int k=0; k<WorkExpName.length; k++){
                    HSSFCell  cell = null;   //设置单元格的数据类型
                    cell = row.createCell(filedName.length+k+l*WorkExpName.length,HSSFCell.CELL_TYPE_STRING);
                    if(!"".equals(mapWorkExp.get(WorkExpName[k])) && mapWorkExp.get(WorkExpName[k]) != null){
                        cell.setCellValue(mapWorkExp.get(WorkExpName[k]).toString());						//设置单元格的值
                    }else {
                        cell.setCellValue("");
                    }
                }
            }
        }
        //让列宽随着导出的列长自动适应

        for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) {
            HSSFRow currentRow;
            //当前行未被使用过
            if (sheet.getRow(rowNum) == null) {
                currentRow = sheet.createRow(rowNum);
            } else {
                currentRow = sheet.getRow(rowNum);
            }
            for (int colNum = 0; colNum < currentRow.getLastCellNum(); colNum++) {
                int columnWidth = sheet.getColumnWidth(colNum) / 256;

                if (currentRow.getCell(colNum) != null) {
                    HSSFCell currentCell = currentRow.getCell(colNum);
                    if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
                        int length = 0;
                        try {
                            length = currentCell.getStringCellValue().getBytes("UTF-8").length;
                        } catch (UnsupportedEncodingException e) {
                            e.printStackTrace();
                        }
                        if (columnWidth < length) {
                            columnWidth = length;
                        }
                    }
                }
                if(colNum == 0){
                    sheet.setColumnWidth(colNum, (columnWidth-2) * 256);
                }else{
                    if((columnWidth+4) * 256 <= 150*256){
                        sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
                    }else{
                        sheet.setColumnWidth(colNum, 150*256);
                    }
                }
            }

        }

        if(workbook !=null){
            try{
                export(response,title,workbook);
            }catch (IOException e){
                e.printStackTrace();
            }
        }

        return null;
    }
}
